[Real Stereo Sound Quality with Deep Bass]-Upgraded Bluetooth 5.0 and lossless HD rendering technology that produce incredible sound quality with deep bass. High Quality Bluetooth Chip, Which Eliminate Noise and Echo. DSP-Equipped audio processor, Provide Bass Sound . You will be immersed in Music World. [ONE-STEP PARING TECHNOLOGY] You donƒ??t need any skills to use earbuds.The Twins Earbuds Turn On and Pair with Each Other Automatically When Take Out of the Charging Case; Turn Off and Charge Automatically When Put them Back into the Charging Case. [Secure Fit&Comfortable Design]Andore wireless earbuds are upgraded the designed to comfortably fit in your ear, Suitable for almost everyone's ears.The super musical outputs are light and comfortable to wear for long hours with no pain. [LONGER BATTERY LIFE-Up to 35 Hours] It is up to 7 hours playing time when headphones fully charged. Else the portable charging case could recharge the earbuds 5 additional times. The total play time could be up to 35 hours. [AFTER-SALE SERVICE] 30 DAYS NO REASON MOENY-BACK GUARANTEE and 18 moths Replacement Warranty, support 7*24h technology service, 24 hours quick reply.Just contact us directly at our customer support if you have any questions.